Seems like this is the answer for most people with hiccups in the program.  Clear the cache, log off, log back in.

https://community.intuit.com/articles/1145697-how-do-i-clear-the-temporary-internet-files-cache

Resolution for 'answer for most people issue: 'I’m getting an error message that says “Saved Conflict. You and XXX were working on this at the same time. XXX finished before you did, so your work was not saved.”' available: Yes.

The answer for most people issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the answer for most people issue yourself by looking for a resolution described in the article. If it is a complex answer for most people issue or you are unable to solve the issue, you may contact us by clicking here or by using other answer for most people support options.

For more information about resolving issues related to answer for most people in Quickbooks/QBO or to get support for the issue 'I’m getting an error message that says “Saved Conflict. You and XXX were working on this at the same time. XXX finished before you did, so your work was not saved.”', click the link below: